Maintainer's Corner

Readme for cryptohash-0.7.10

CryptoHash

hs-cryptohash provides lots of different secure digest algorithms, also
called cryptohashes. It exposes every common hashes, but also some
more exotic hashes, provides an extensive list of hashes available
with a consistant API.

The general performance are comparable to the most optimised hashes
available.

The complete list of supported hashes:

MD2, MD4, MD5

RIPEMD160

SHA1

SHA-2 family: 224, 256, 384, 512 and the newer 512t

SHA-3 (aka Keccak)

Skein: 256, 512

Tiger

Whirlpool

You can easily import any hash with the following:

import qualified Crypto.Hash.<HASH> as <Hash>

suggestion: it's easier to import qualified since there's
a collision with the init symbol, but for only importing
the hash or hashlazy function there's no such need.

Every hashes, exposes a very similar API.

Incremental API

it's based on 3 different functions, similar to the lowlevel operations
of a typical hash:

init: create a new hash context

update: update non-destructively a new hash context with a strict bytestring

finalize: finalize the context and returns a digest bytestring.

all those operations are completely pure, and instead of changing the
context as usual in others language, it create a new context each time.

One Pass API

The one pass API use the incremental API under the hood, but expose
common operations to create digests out of a bytestring and lazy bytestring.

hash: create a digest (init+update+finalize) from a strict bytestring

hashlazy: create a digest (init+update+finalize) from a lazy bytestring

Integration with crypto-api

cryptohash is fully integrated with crypto-api and you can use the
related function in crypto-api to use any cryptohash modules.

Performance

Cryptohash uses C implementations to provides maximum performance.
see the cbits directory for more information